fix(info): use externalDocsUrl check to render Link (#6997)

* fixes screen reader accessibility issue

Author: tim-lai

src/core/components/info.jsx

@@ -148,7 +148,7 @@ export default class Info extends React.Component {
 
         {contact && contact.size ? <Contact getComponent={getComponent} data={ contact } selectedServer={selectedServer} url={url} /> : null }
         {license && license.size ? <License getComponent={getComponent} license={ license } selectedServer={selectedServer} url={url}/> : null }
-        { externalDocs ?
+        { externalDocsUrl ?
             <Link className="info__extdocs" target="_blank" href={sanitizeUrl(externalDocsUrl)}>{externalDocsDescription || externalDocsUrl}</Link>
         : null }